Worldthreader

Worldthreader 2.1.2 for Minecraft 1.21.5 fixes a bug when command blocks or data packs teleport players from their dimension into another dimension. Please report any issues you encounter to the issue tracker of worldthreader. As worldthreader likely comes with massive mod compatibility issues, please do not report crashes and issues to other mods' issue trackers before confirming the issue without worldthreader.

Fixes:

• Fix exception when command blocks or data packs teleport players to other dimension

Known issues

The worldthreader debug gamerule only works when enabling it after the server start.